Questions: Ch 04: DynamicsForce and Newton's Laws of Motion 1. A force is a A. scalar B. vector An object which is moving has a net force acting on it in the direction of motion. 2. A. Definitely B. Maybe C. No way Which of the following describes the relationship for forces between pairs of interacting objects? 3. A. An object's acceleration is inversely proportional to its mass. B. For every action there is an equal but opposite reaction. C. The natural condition for a moving object is to remain in motion. D. The natural motion for a moving object is to come to rest. The mass of a 28000 N elevator is 4. A. 2698 kg B. 2358 kg D. 2336 kg C. 2681 kg E. 3220 kg F. 2857 kg

Ch 04: DynamicsForce and Newton's Laws of Motion 1. A force is a A. scalar B. vector An object which is moving has a net force acting on it in the direction of motion. 2. A. Definitely B. Maybe C. No way Which of the following describes the relationship for forces between pairs of interacting objects? 3. A. An object's acceleration is inversely proportional to its mass. B. For every action there is an equal but opposite reaction. C. The natural condition for a moving object is to remain in motion. D. The natural motion for a moving object is to come to rest. The mass of a 28000 N elevator is 4. A. 2698 kg B. 2358 kg D. 2336 kg C. 2681 kg E. 3220 kg F. 2857 kg
Transcript text: Ch 04: Dynamics_Force and Newton's Laws of Motion 1. A force is a $\qquad$ A. scalar B. vector An object which is moving has a net force acting on it in the direction of motion. 2. A. Definitely B. Maybe C. No way Which of the following describes the relationship for forces between pairs of interacting objects? 3. A. An object's acceleration is inversely proportional to its mass. B. For every action there is an equal but opposite reaction. C. The natural condition for a moving object is to remain in motion. D. The natural motion for a moving object is to come to rest. The mass of a 28000 N elevator is $\qquad$ 4. A. 2698 kg B. 2358 kg D. 2336 kg C. $\quad 2681 \mathrm{~kg}$ E. 3220 kg F. $\quad 2857 \mathrm{~kg}$
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Solution

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Solution Steps

Step 1: Determine the Nature of Force

A force is a physical quantity that has both magnitude and direction. Therefore, it is a vector quantity.

Step 2: Analyze the Net Force on a Moving Object

An object in motion does not necessarily have a net force acting in the direction of motion. According to Newton's First Law, an object in motion will remain in motion at a constant velocity unless acted upon by a net external force. Therefore, the correct answer is that a moving object does not always have a net force in the direction of motion.

Step 3: Identify the Relationship Between Interacting Forces

Newton's Third Law states that for every action, there is an equal and opposite reaction. This describes the relationship for forces between pairs of interacting objects.

Final Answer

  1. \(\boxed{\text{B. vector}}\)
  2. \(\boxed{\text{C. No way}}\)
  3. \(\boxed{\text{B. For every action there is an equal but opposite reaction.}}\)
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